Columbia Women's Rainey Tall Print Rain Boot 100% Rubber Made in US Rubber sole Shaft measures approximately 11.5" from arch Heel measures approximately 1.5" Platform measures approximately 0.5 inches Boot opening measures approximately 15" around One piece, phthalate-free environmentally friendly PVC with sublimated, polyester, sock liner. Internal molded EVA sock liner. Aggressive tread to ensure superior grip in all outdoor environments.